Malicious PDF — malware analysis report

Static analysis result for SHA-256 880d8f85b5626b0a…

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 08:22:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c9a8cdc65dbcb201ad20bc0613781178 SHA-1: 4e527351bf5f12169d78190e7da356d573000997 SHA-256: 880d8f85b5626b0aa419e74a1f4ccb54992e2f653f5fa6585727767f850e6396
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/406889139/free-spins-and-coins-for-coin-master-game-game-hack PDF link annotation
    • http://kermas.eu/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-net_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/is-minecraft-free_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/robux-cheat_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D8 24760 bytes
SHA-256: 72492fcf8011688be853b1924cb90df5d79315f2a5c9b05edf87ab58970884fc
font_01_sfnt_off000081de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DE 18320 bytes
SHA-256: d1cf6b486e789d6a7a281824944966070be141b92be060b449a52bae7023ebff

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